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<h1>sfpe
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<h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
<div class="box"><strong>Peak of spectrogram frequency estimation</strong></div>

<h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
<div class="fragment"><pre class="comment"> Peak of spectrogram frequency estimation

 Estimates the instantaneous frequency of the input signal by extracting
 the peaks of the spectrogram.


 Usage:

     ife = sfpe (signal, window_length, time_res [, fft_length] )

 Parameters:

    signal

      Input one dimensional signal to be analysed.    An analytic signal
      is required for this function, however, if signal is real, a
      default analytic transformer routine will be called from this
      function before computing spectrogram.

    window_length

      The size of the kernel used for analysis. window_length must
      be odd. The kernel used will be defined from -(window_length+1)/2 to
      +(window_length+1)/2 in both time and lag dimensions.

    time_res

      The number of time samples to skip between successive slices of
      the analysis.

    fft_length

         Zero-padding at the fft stage of the analysis may be specified by
         giving an fft_length larger than normal. If fft_length is not
      specified then the next highest power of two above the
         signal length will be used. If fft_length is not a power
         of two, then the next highest power of two is used.



  See Also: <a href="spec.html" class="code" title="">spec</a></pre></div>

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